251013427201 has 2 divisors, whose sum is σ = 251013427202. Its totient is φ = 251013427200.

The previous prime is 251013427177. The next prime is 251013427207. The reversal of 251013427201 is 102724310152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 234333446400 + 16679980801 = 484080^2 + 129151^2 .

It is a cyclic number.

It is not a de Polignac number, because 251013427201 - 2¹³ = 251013419009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 251013427201.

It is not a weakly prime, because it can be changed into another prime (251013427207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125506713600 + 125506713601.

It is an arithmetic number, because the mean of its divisors is an integer number (125506713601).

Almost surely, 2^251013427201 is an apocalyptic number.

It is an amenable number.

251013427201 is a deficient number, since it is larger than the sum of its proper divisors (1).

251013427201 is an equidigital number, since it uses as much as digits as its factorization.

251013427201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 28.

Adding to 251013427201 its reverse (102724310152), we get a palindrome (353737737353).

The spelling of 251013427201 in words is "two hundred fifty-one billion, thirteen million, four hundred twenty-seven thousand, two hundred one".